Windows setup

Make sure the installed NVIDIA software packages match the versions listed above. In
particular, TensorFlow will not load without the cuDNN64_7.dll file. To use a
different version, see the Windows build from source guide.

Add the CUDA, CUPTI, and cuDNN installation directories to the %PATH%
environmental variable. For example, if the CUDA Toolkit is installed to
C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.1 and cuDNN to
C:\tools\cuda, update your %PATH% to match: